import auth from '@/plugins/auth'
import router, {constantRoutes, dynamicRoutes} from '@/router'
import {getRouters} from '@/api/menu'
import Layout from '@/layout/index'
import ParentView from '@/components/ParentView'
import InnerLink from '@/layout/components/InnerLink'

// 匹配views里面所有的.vue文件
const modules = import.meta.glob('./../../views/**/*.vue')

const usePermissionStore = defineStore(
  'permission',
  {
    state: () => ({
      routes: [],
      addRoutes: [],
      defaultRoutes: [],
      topbarRouters: [],
      sidebarRouters: []
    }),
    actions: {
      setRoutes(routes) {
        this.addRoutes = routes
        this.routes = constantRoutes.concat(routes)
      },
      setDefaultRoutes(routes) {
        this.defaultRoutes = constantRoutes.concat(routes)
      },
      setTopbarRoutes(routes) {
        this.topbarRouters = routes
      },
      setSidebarRouters(routes) {
        this.sidebarRouters = routes
      },
      /**
       * 根据用户角色生成路由
       * @param {Array} roles - 用户角色列表
       * @returns {Promise} 返回包含生成路由的Promise对象
       */
      generateRoutes(roles) {
        return new Promise(resolve => {
          getRouters().then(response => {
            const res = filterBySystemNameFlag(response.data,"PB");
            console.log("拿到的党建的路由: ",res)
            const specialItem = filterSystemRoutes(response.data, "system/");
            if (Array.isArray(specialItem) && specialItem.length > 0) {
              res.push(specialItem[0]);
            }
            const sdata = JSON.parse(JSON.stringify(res));
            const rdata = JSON.parse(JSON.stringify(res));
            const defaultData = JSON.parse(JSON.stringify(res));
            const sidebarRoutes = filterAsyncRouter(sdata);
            const rewriteRoutes = filterAsyncRouter(rdata, false, true);
            const defaultRoutes = filterAsyncRouter(defaultData);
            const asyncRoutes = filterDynamicRoutes(dynamicRoutes);
            asyncRoutes.forEach(route => {
              router.addRoute(route)
            })
            this.setRoutes(rewriteRoutes)
            this.setSidebarRouters(constantRoutes.concat(sidebarRoutes))
            this.setDefaultRoutes(sidebarRoutes)
            this.setTopbarRoutes(defaultRoutes)
            // 根据筛选出来用户具有的菜单权限然后分配第一个路由地址为重定向的菜单
            let redirectPath = '/';
            if (rewriteRoutes.length > 0) {
              if (rewriteRoutes[0].children && rewriteRoutes[0].children.length > 0) {
                redirectPath = `${rewriteRoutes[0].path}/${rewriteRoutes[0].children[0].path}`;
              } else {
                redirectPath = rewriteRoutes[0].path;
              }
            }
            // 构建重定向路由
            const redirectRoute = {
              path: '',
              component: Layout,
              redirect: redirectPath,
            };
            rewriteRoutes.unshift(redirectRoute);
            // 重定向菜单构建完毕
            resolve(rewriteRoutes)
          })
        })
      }
    }
  })
function filterBySystemNameFlag(list,flag) {
  return JSON.parse(JSON.stringify(list)).filter(item => {
    const isMatch = item.systemName === flag;
    if (item.children && item.children.length > 0) {
      item.children = item.children.filter(child => child.systemName === flag);
    } else if (item.children) {
      item.children = [];
    }
    return isMatch || (item.children && item.children.length > 0);
  });
}

function filterSystemRoutes(list, flag = "system/") {
  return JSON.parse(JSON.stringify(list)).filter(item => {
    const isMatch = item.component && item.component.includes(flag);
    if (item.children && item.children.length > 0) {
      item.children = filterSystemRoutes(item.children, flag);
    } else if (item.children) {
      item.children = [];
    }
    return isMatch || (item.children && item.children.length > 0);
  });
}


// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
  return asyncRouterMap.filter(route => {
    if (type && route.children) {
      route.children = filterChildren(route.children)
    }
    if (route.component) {
      // Layout ParentView 组件特殊处理
      if (route.component === 'Layout') {
        route.component = Layout
      } else if (route.component === 'ParentView') {
        route.component = ParentView
      } else if (route.component === 'InnerLink') {
        route.component = InnerLink
      } else {
        route.component = loadView(route.component)
      }
    }
    if (route.children != null && route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children, route, type)
    } else {
      delete route['children']
      delete route['redirect']
    }
    return true
  })
}

function filterChildren(childrenMap, lastRouter = false) {
  var children = []
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      if (el.component === 'ParentView' && !lastRouter) {
        el.children.forEach(c => {
          c.path = el.path + '/' + c.path
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c))
            return
          }
          children.push(c)
        })
        return
      }
    }
    if (lastRouter) {
      el.path = lastRouter.path + '/' + el.path
    }
    children = children.concat(el)
  })
  return children
}

// 动态路由遍历，验证是否具备权限
export function filterDynamicRoutes(routes) {
  const res = []
  routes.forEach(route => {
    if (route.permissions) {
      if (auth.hasPermiOr(route.permissions)) {
        res.push(route)
      }
    } else if (route.roles) {
      if (auth.hasRoleOr(route.roles)) {
        res.push(route)
      }
    }
  })
  return res
}

export const loadView = (view) => {
  let res;
  for (const path in modules) {
    const dir = path.split('views/')[1].split('.vue')[0];
    if (dir === view) {
      res = () => modules[path]();
    }
  }
  return res;
}

export default usePermissionStore
